CN114674690A

CN114674690A - Mechanical property measuring device for new mechanical plastic material

Info

Publication number: CN114674690A
Application number: CN202110767383.5A
Authority: CN
Inventors: 顾军; 张羽标
Original assignee: Shenzhen Bosheng New Material Co ltd
Current assignee: Shenzhen Bosheng New Material Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2022-06-28

Abstract

The invention discloses a device for measuring mechanical characteristics of a new mechanical plastic material, relates to the technical field of material mechanical characteristic detection, and solves the problem that the existing device cannot measure the bending fatigue of a material through multiple times of folding. A mechanical property measuring device for a new mechanical plastic material comprises a bearing table; the bearing table is of a table-shaped structure and comprises a T-shaped plate, the T-shaped plate is in an inverted T shape and is fixedly connected to the top surface of the bearing table through a bolt; a shearing force measuring structure is arranged on the front side of the top of the receiving table; the eccentric cover is driven to rotate eccentrically through the motor rotating shaft, the contact bearing can be matched with the reset spring, and the push rod can be driven to do reciprocating motion, so that the driven rack meshed with the driven gear can do transverse reciprocating motion, the slide rod can be driven to slide in the fixing seat, the turnover flap can drive the plastic sample to turn over in a reciprocating mode, and the bending fatigue of the material can be measured through multiple turnover.

Description

Mechanical property measuring device for new mechanical plastic material

Technical Field

The invention relates to the technical field of material mechanical property detection, in particular to a mechanical property measuring device for a new mechanical plastic material.

Background

The mechanical properties of the material mainly refer to the mechanical properties of the material, such as the compression resistance, deformation capacity, fracture, friction and the like of the material, and are mainly reflected in hardness, elastic modulus, yield strength and the like.

The invention discloses a mechanical property measuring device for a new mechanical plastic material by retrieving patents with the patent number of CN112304780A, which can detect the strength, the toughness and the torque of the material, adopts paper image exporting equipment as a detection result, is simple and convenient to use, enables the detection result to be visually displayed by the image display result, is favorable for material detection, simultaneously adopts a mechanical structure and low manufacturing cost, simultaneously adopts the mechanical structure, does not need to match various programs and operations in the using process, enables the operation process to be simple and convenient to use, simultaneously can drive the driving part by adopting a loaded mobile power supply, enables the equipment to measure samples at any time and any place, can be used in any environment, and greatly improves the practicability of the invention Simple structure, low manufacturing cost and random movement, etc.

For another example, patent No. CN110907279A discloses a device for measuring mechanical properties of new mechanical plastic materials, which relates to the technical field of new materials. This mechanical type plastics new material mechanical properties measuring device, the fruit pick-up device comprises a frame body, the top fixed mounting of framework has the motor, the front side sliding connection at framework top has the lifter plate, the bottom fixed mounting of lifter plate has the sleeve, spring fixedly connected with stripper bar is passed through to telescopic inside, the bottom fixedly connected with pressure head of stripper bar, the left end fixed mounting of sleeve bottom has the mounting panel, and this mechanical type plastics new material mechanical properties measuring device has realized utilizing the theory of mechanics to the measurement of new material mechanical properties, has avoided the use of sensor and procedure of calculation, has reduced measuring device's manufacturing cost, and is convenient for carry and remove, has improved measuring facility, can accurately obtain the relevant data that act on the new material, can carry out the analysis to the multinomial mechanical properties of new material.

Based on the aforesaid, traditional mechanical type plastics new material mechanical properties measuring device generally detects the structure for the unifunctional, generally does not set up the structure that can realize going on reciprocating to turn over to the plastics sample, can not turn over a lot of and come the bending fatigue degree of measuring the material, does not set up the structure of measurable quantity sample shear strength, does not set up the structure that goes on reciprocating the striking to sample plastics, can not detect anti striking fatigue degree and sample modulus of elasticity of sample material.

Therefore, the existing requirements are not met, and a mechanical property measuring device for the new mechanical plastic material is provided for the requirement.

Disclosure of Invention

Problem (A)

The invention aims to provide a device for measuring mechanical characteristics of a new mechanical plastic material, which aims to solve the problems that the traditional device for measuring mechanical characteristics of a new mechanical plastic material in the background art is generally a single-function detection structure, a structure capable of realizing reciprocating turnover of a plastic sample is not arranged, the bending fatigue of the material cannot be measured through repeated turnover, a structure capable of measuring the shearing force strength of the sample is not arranged, a structure capable of performing reciprocating impact on the plastic sample is not arranged, and the impact fatigue resistance of the material and the elastic modulus of the sample cannot be detected.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a mechanical property measuring device for a new mechanical plastic material comprises a bearing table;

the bearing table is of a table-shaped structure and comprises a T-shaped plate, the T-shaped plate is in an inverted T shape and is fixedly connected to the top surface of the bearing table through a bolt;

a shear force measuring structure is arranged on the front side of the top of the bearing table;

A control part is arranged in the shearing force measuring structure;

a bending fatigue detection mechanism is arranged in the middle of the top surface of the bearing table;

and an impact test structure is arranged on the rear side of the top of the bearing table.

Preferably, the shear force measuring structure includes:

the workbench is fixedly connected to the vertical surface of the front end of the T-shaped plate;

the fixed frame is fixedly connected to the left side of the top surface of the workbench through bolts;

the square groove box is fixedly connected to the top of the fixed frame;

and the sliding rail is fixedly connected to the top surface of the workbench and is positioned on the right side of the fixing frame.

Preferably, the shear force measuring structure further includes:

the movable frame is arranged on the top surface of the sliding rail through sliding connection, and a vertical through round hole is formed in the movable frame;

the pull ring rod is arranged in a circular hole in the movable frame through sliding connection, the bottom surface of a circular sheet at the top of the pull ring rod is provided with a tension spring, and the bottom of the tension spring is fixed with the top surface of the movable frame;

the fixed slot is a cylindrical groove and is fixedly connected to the top of the workbench.

Preferably, the shear force measuring structure further includes:

the hydraulic part is arranged above the workbench;

the square pressing block is fixedly connected to the bottom surface of the telescopic part at the bottom end of the hydraulic part, and the vertical surfaces at two sides of the square pressing block are parallel to the angle of the vertical surface at the inner side of the square groove box;

And the pump is arranged on the right side of the workbench, and the circuit of the pump is coupled with the hydraulic part and the control part.

Preferably, the bending fatigue detection mechanism includes:

the variable speed motor is fixedly connected to the top surface of the bearing table, and the circuit of the variable speed motor is coupled with the circuit of the control part;

the eccentric cover is fixedly connected to the top of the rotating shaft of the variable speed motor, and the top of the eccentric cover is provided with a pipe wall;

the contact bearing is arranged above the eccentric cover, and the outer ring of the contact bearing is in contact with the pipe wall of the eccentric cover;

the push rod is fixedly connected to the top of the contact bearing, and the rear end of the push rod is fixedly connected with an impact head.

Preferably, the bending fatigue detection mechanism includes:

the spring ring is fixedly connected to the curved side surface of the push rod, and the rear end of the spring ring is fixedly connected with a return spring;

the limiting sliding seat is fixedly connected to the top of the bearing table, arranged on the rear side of the variable speed motor, and the top of the limiting sliding seat is in sliding connection with the push rod;

the square motion rod is arranged at the front end of the push rod through coaxial connection;

the arc-shaped grooves are arranged in four groups and fixedly connected to the side vertical surfaces of the square motion rods.

Preferably, the bending fatigue detection mechanism further includes:

the fixed plate is fixedly connected to the top surface of the bearing table, is positioned on the front side of the variable speed motor, and is internally provided with a transverse through square slot;

The reinforcing beams are arranged in four groups and fixedly connected to the front end of the fixed plate, and the front ends of the reinforcing beams are fixedly connected to the vertical surface of the rear end of the T-shaped plate;

the roller is fixedly connected to the vertical surface of the inner side of the square groove in the fixed plate, and the inner side of the roller is in supporting contact with the arc-shaped groove;

the connecting hoop is arranged at the front end of the square moving rod through coaxial connection;

the side bars are arranged into two groups in number and are fixedly connected to two sides of the connecting hoop.

Preferably, the bending fatigue detection mechanism further includes:

the transmission rack is fixedly connected to the inner sides of the side rods;

the driven gears are arranged in two groups in number, are arranged on the left side and the right side of the T-shaped plate through hinged connection and are in meshed transmission with the transmission racks;

the driven rack is arranged on the inner side of the driven gear, and a cylindrical sliding rod is fixedly connected to the rear end of the driven rack;

the fixing seat is arranged at the rear end of the T-shaped plate and is in sliding connection with the cylindrical sliding rod at the rear end of the driven rack;

the connecting plate is fixedly connected to the inner sides of the two groups of fixing seats, and the connecting plate is vertical to the bearing table;

the folding flap is arranged at the rear end of the cylindrical sliding rod at the rear end of the driven rack through hinged connection;

the hinged piece is arranged between the turnover flap and the fixed seat through hinged connection;

The fixing bolt is arranged inside the turnover flap in a threaded connection mode, and the rear end of the fixing bolt is provided with a clamping plate in a hinged connection mode.

Preferably, the impact test structure includes:

the L-shaped frame is fixedly connected to the top surface of the rear side of the bearing table through bolts;

the hinged clamping rods are arranged in two groups in number and are arranged at the front end vertical surface of the L-shaped frame through hinged connection;

the connecting bolt is arranged at the top of the hinged clamping rod in a threaded connection manner;

the connecting blocks are arranged into two groups and fixedly connected to the vertical surface of the front end of the top of the L-shaped frame, and two groups of threaded holes are formed in the front end of the top connecting block;

the number of the side limiting pieces is two, and the side limiting pieces are fixedly connected to the front end vertical surfaces of the two groups of connecting blocks;

and the sample plastic plate is arranged on the inner sides of the two groups of side limiting sheets, and the rear end vertical surface of the sample plastic plate is in contact with the front end vertical surface of the connecting block.

(III) advantageous effects

1. The invention can lead the clamping plate to move towards the direction of the turnover flap by arranging the bending fatigue detection mechanism, can clamp and fix the plastic sample at the inner side of the turnover flap by rotating the fixing bolt after the plastic sample is placed between the turnover flap and the clamping plate, can lead the clamping plate to move towards the turnover flap by rotating the fixing bolt, can lead the control part to start the variable speed motor, lead the motor rotating shaft to drive the eccentric cover to eccentrically rotate, lead the contact bearing to be matched with the reset spring, lead the push rod to reciprocate, lead the outer arc-shaped groove of the square motion rod to be in rolling contact with the inner roller of the groove of the fixing plate, reduce the friction force while fixing the reciprocating direction, lead the connecting hoop to drive the side rods at the two sides to reciprocate, lead the driving racks at the inner sides of the side rods to drive the driven gear to rotate by the meshing transmission of the tooth parts, lead the driven racks which are meshed with the driven gear to transversely reciprocate, and lead the sliding rod to slide in the fixing seat, therefore, the folding flap drives the plastic sample to be folded in a reciprocating manner, and the bending fatigue of the material can be measured through multiple times of folding.

2. The shearing force measuring structure is arranged, one end of a plastic block sample is inserted into the square groove box at the top of the fixed frame, the movable frame is pulled to the left side to slide on the sliding rail, when the inner vertical surface of the square groove box at the top of the movable frame contacts the right vertical surface of the plastic block sample, the bottom end of the pull ring rod moves to the fixed slot position at the top of the workbench, the pull ring rod is pulled by the tension spring at the top of the pull ring rod to enable the bottom of the pull ring rod to be inserted into the fixed slot, so that the position of the movable frame is fixed, the hydraulic part is controlled by the control part to drive the square pressing block to descend so as to enable the square pressing block to contact the exposed top surface of the sample, and the shearing force strength of the sample can be measured by matching with the square groove box.

3. The invention also discloses a test device for the impact of a sample plastic plate, which is characterized in that an impact test structure is arranged, the sample plastic plate is placed on a hinged clamping rod base, the hinged clamping rod is turned upwards and matched with a connecting block to clamp the sample plastic plate, a rotary connecting bolt can connect and fix the hinged clamping rod with the top connecting block through a screw rod, a control part controls a variable speed motor to operate, a motor rotating shaft drives an eccentric cover to eccentrically rotate, a contact bearing can be matched with a reset spring, a push rod can be driven to do reciprocating motion, a rear end impact head can be driven to do reciprocating impact on the sample plastic plate through the reciprocating motion of the push rod, and the impact fatigue resistance and the sample elastic modulus of a sample material can be detected through regularly measuring the sinking degree of the sample plastic plate.

Drawings

FIG. 1 is a schematic side view of an overall structure of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 in accordance with an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of B in FIG. 1 according to an embodiment of the present invention;

FIG. 4 is a schematic top perspective view of a bending fatigue detection mechanism according to an embodiment of the present invention;

FIG. 5 is a schematic side sectional perspective view of a workbench in accordance with an embodiment of the present invention;

FIG. 6 is a schematic perspective view of a shear force measurement structure according to an embodiment of the present invention;

FIG. 7 is a right side perspective view of the entire embodiment of the present invention;

FIG. 8 is a schematic perspective view of an impact test structure according to an embodiment of the present invention;

in fig. 1 to 8, the correspondence between the part names or lines and the reference numbers is:

1. a receiving table;

101. a T-shaped plate;

2. a shear force measurement structure;

201. a work table; 2011. a fixed mount; 2012. a square groove box; 2013. a slide rail; 2014. a movable frame; 2015. a link rod; 2016. fixing the slot; 202. a hydraulic section; 2021. square briquetting; 2022. a pump machine;

3. a control unit;

4. a bending fatigue detection mechanism;

401. a variable speed motor; 402. an eccentric cover; 403. a contact bearing; 404. a push rod; 4041. a spring ring; 4042. a limiting sliding seat; 405. a square motion bar; 4051. an arc-shaped slot; 406. a fixing plate; 4061. a reinforcing beam; 4062. a roller; 407. a connecting hoop; 4071. a side lever; 408. a drive rack; 409. a driven gear; 410. a driven rack; 411. a fixed seat; 412. a connecting plate; 413. folding flaps; 414. an articulation member; 415. fixing the bolt;

5. An impact test structure;

501. an L-shaped frame; 502. hinging the clamping rod; 5021. a connecting bolt; 503. connecting blocks; 5031. a side limiting sheet;

6. sample plastic plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 8, an embodiment of the present invention includes: a mechanical property measuring device for a new mechanical plastic material comprises a bearing table 1;

the bearing platform 1 is of a platform-shaped structure, the bearing platform 1 comprises a T-shaped plate 101, and the T-shaped plate 101 is in an inverted T shape and is fixedly connected to the top surface of the bearing platform 1 through bolts;

a shear force measuring structure 2 is arranged on the front side of the top of the receiving platform 1;

a control part 3 is arranged in the shearing force measuring structure 2;

the middle part of the top surface of the receiving platform 1 is provided with a bending fatigue detection mechanism 4;

the rear side of the top of the receiving platform 1 is provided with an impact test structure 5.

The bending fatigue detection mechanism 4 includes:

the variable speed motor 401 is fixedly connected to the top surface of the bearing table 1, and the circuit of the variable speed motor 401 is coupled with the circuit of the control part 3;

The eccentric cover 402 is fixedly connected to the top of the rotating shaft of the variable speed motor 401, and the top of the eccentric cover is provided with a pipe wall;

a contact bearing 403 arranged above the eccentric cover 402, wherein the outer ring of the contact bearing 403 is in contact with the pipe wall of the eccentric cover 402;

and a push rod 404, wherein the push rod 404 is fixedly connected to the top of the contact bearing 403, and the rear end of the push rod 404 is fixedly connected with an impact head.

The bending fatigue detection mechanism 4 includes:

a spring ring 4041 which is fixedly connected to the curved side surface of the push rod 404, and the rear end of which is fixedly connected with a return spring;

a limiting sliding seat 4042 fixedly connected to the top of the receiving platform 1, the limiting sliding seat 4042 is arranged on the rear side of the variable speed motor 401, and the top of the limiting sliding seat 4042 is connected with the push rod 404 in a sliding manner;

a square motion bar 405 provided at the front end of the push bar 404 by coaxial connection;

the arc-shaped slots 4051 and the arc-shaped slots 4051 are arranged in four groups and are fixedly connected with the side vertical surface of the square motion bar 405.

As shown in fig. 4, the bending fatigue detection mechanism 4 further includes:

the fixing plate 406 is fixedly connected to the top surface of the bearing table 1, is positioned on the front side of the variable speed motor 401, and is internally provided with a transverse through square slot;

the reinforcing beams 4061 are arranged in four groups, the reinforcing beams 4061 are fixedly connected to the front end of the fixing plate 406, and the front ends of the reinforcing beams 4061 are fixedly connected to the vertical surface of the rear end of the T-shaped plate 101;

A roller 4062 fixedly connected to the inner side vertical surface of the square groove inside the fixing plate 406, the inner side of which is in supporting contact with the arc-shaped groove 4051;

the connecting hoop 407, the connecting hoop 407 is arranged at the front end of the square motion rod 405 through coaxial connection;

the side rods 4071, which are provided in two sets in number, are fixedly connected to both sides of the connecting band 407.

Bending fatigue detection mechanism 4 further includes:

a transmission rack 408 fixedly connected to the inner side of the side lever 4071;

the driven gears 409 are arranged in two groups, are arranged on the left side and the right side of the T-shaped plate 101 through hinged connection and are in meshed transmission with the transmission rack 408;

the driven rack 410 is arranged on the inner side of the driven gear 409, and a cylindrical sliding rod is fixedly connected to the rear end of the driven rack 410;

the fixed seat 411 is arranged at the rear end of the T-shaped plate 101, and the fixed seat 411 is connected with a cylindrical sliding rod at the rear end of the driven rack 410 in a sliding manner;

a connecting plate 412 fixedly connected to the inner sides of the two sets of fixing seats 411, wherein the connecting plate 412 is vertical to the receiving platform 1;

the folding flap 413 is arranged at the rear end of the cylindrical sliding rod at the rear end of the driven rack 410 through hinge connection;

a hinge 414 disposed between the folding flap 413 and the fixing seat 411 through hinge connection;

The fixing bolt 415 is arranged inside the turnover flap 413 through threaded connection, the rear end of the fixing bolt 415 is provided with a clamping plate through hinged connection, after a plastic sample is placed between the turnover flap 413 and the clamping plate, the clamping plate can move towards the direction of the turnover flap 413 through rotating the fixing bolt 415 to clamp and fix the plastic sample on the inner side of the clamping plate, the variable speed motor 401 is started through the control part 3, the eccentric cover 402 is driven to rotate eccentrically through the rotating shaft of the motor, the contact bearing 403 can be matched with the reset spring to drive the push rod 404 to do reciprocating motion, the outer arc-shaped groove 4051 of the square motion rod 405 is in rolling contact with the slotted inner roller 4062 of the fixing plate 406, the friction force can be reduced while the reciprocating motion direction is fixed, the side rods 4071 on two sides are driven to do reciprocating motion through the connecting hoop, the rack 408 on the inner sides of the side rods 4071 can drive the driven gear 409 to rotate through tooth meshing transmission 407, therefore, the driven rack 410 which is in meshing transmission with the driven gear 409 can transversely reciprocate to drive the sliding rod to slide in the fixed seat 411, so that the folding flap 413 can drive the plastic sample to be folded in a reciprocating manner, and the bending fatigue of the material can be measured through multiple folding.

As shown in fig. 8, the impact test structure 5 includes:

an L-shaped frame 501 fixedly connected to the rear top surface of the receiving table 1 by bolts;

the number of the hinged clamping rods 502 is two, and the hinged clamping rods 502 are arranged at the front end vertical surface of the L-shaped frame 501 through hinging;

the connecting bolt 5021 is arranged at the top of the hinged clamping rod 502 in a threaded connection mode, and the connecting bolt 5021 is arranged at the top of the hinged clamping rod 502 in a threaded connection mode;

the number of the connecting blocks 503 is two, the connecting blocks are fixedly connected to the vertical surface of the front end of the top of the L-shaped frame 501, and two groups of threaded holes are formed in the front end of the top connecting block 503;

the number of the side limiting pieces 5031 is two, and the side limiting pieces 5031 are fixedly connected to the front end vertical surfaces of the two connecting blocks 503;

a sample plastic plate 6 which is arranged inside the two sets of side limiting pieces 5031, the rear end vertical surface of the sample plastic plate is contacted with the front end vertical surface of the connecting block 503, the sample plastic plate 6 is placed on the base of the hinged clamping rod 502, the hinged clamping rod 502 is turned upwards, the sample plastic plate 6 can be clamped through matching with the connecting block 503, the hinged clamping rod 502 can be connected and fixed with the top connecting block 503 through a screw by rotating the connecting bolt 5021, the control part 3 controls the variable speed motor 401 to operate, the motor shaft drives the eccentric cover 402 to eccentrically rotate, the contact bearing 403 can be matched with a return spring, the push rod 404 can be driven to reciprocate, the push rod 404 reciprocates to drive the rear end impact head to impact the sample plastic plate 6 in a reciprocating way, by measuring the sinking degree of the sample plastic plate 6 at regular time, the impact fatigue resistance of the sample material and the elastic modulus of the sample can be detected.

As shown in fig. 2, the shear force measuring structure 2 includes:

a workbench 201 fixedly connected to the front end vertical surface of the T-shaped plate 101;

a fixed frame 2011, wherein the fixed frame 2011 is fixedly connected to the left side of the top surface of the workbench 201 through bolts;

the square groove box 2012 is fixedly connected to the top of the fixing frame 2011;

the slide rail 2013, the slide rail 2013 is fixedly connected to the top surface of the workbench 201, and is located on the right side of the fixed frame 2011.

The shear force measurement structure 2 further includes:

the movable frame 2014 is arranged on the top surface of the sliding rail 2013 in a sliding connection mode, and a vertical through round hole is formed in the movable frame 2014;

the pull ring rod 2015 is arranged in a circular hole in the movable frame 2014 in a sliding connection mode, the bottom surface of a circular piece at the top of the pull ring rod is provided with a tension spring, and the bottom of the tension spring is fixed with the top surface of the movable frame 2014;

the fixing slot 2016 is a cylindrical groove and is fixedly connected to the top of the workbench 201;

a hydraulic part 202, wherein the hydraulic part 202 is arranged above the workbench 201;

the square pressing block 2021 is fixedly connected to the bottom surface of the telescopic part at the bottom end of the hydraulic part 202, and the vertical surfaces at the two sides of the square pressing block 2021 are parallel to the angle of the vertical surface at the inner side of the square groove box 2012;

the pump 2022, the pump 2022 is disposed on the right side of the workbench 201, the circuit of the pump is coupled with the hydraulic part 202 and the control part 3, after one end of the plastic block sample is inserted into the square groove box 2012 at the top of the fixed frame 2011, the movable frame 2014 is pulled to the left side to slide on the slide rail 2013, when the inner vertical surface of the square groove box 2012 at the top of the movable frame 2014 contacts the vertical surface of the right side of the plastic block sample, the bottom end of the pull ring rod 2015 moves to the position of the fixed groove 2016 at the top of the workbench 201, the pull ring rod 2015 is pulled by the tension spring at the top of the pull ring rod 2015, the bottom of the pull ring rod 2015 can be inserted into the fixed groove 2016, so that the position of the movable frame 2014 is fixed, the hydraulic part 202 is controlled by the control part 3 to drive the square pressing block 2021 to descend, so that the contact sample exposes the top surface, and the shear strength of the sample can be measured by matching with the square groove box 2012.

In another embodiment, a laser range finder is fixedly connected to the front end vertical surface of the top of the L-shaped frame 501, the direction of a detection sensor of the laser range finder is coaxial with the push rod 404, the laser range finder is located between the two sets of connecting blocks 503, the laser range finder is coupled with the control part 3 circuit, the variable speed motor 401 is controlled to operate, the push rod 404 reciprocates to impact the sample plastic plate 6, the impact position of the sample is depressed, the depressed position is measured by laser, and the elastic modulus value of the material resilience can be obtained by comparing the depressed values.

The working principle is as follows:

when the device is used, firstly, a plastic sample is cut, after one end of the plastic block sample is inserted into the square groove box 2012 at the top of the fixed frame 2011, the movable frame 2014 is pulled towards the left side to slide on the slide rail 2013, when the inner vertical surface of the square groove box 2012 at the top of the movable frame 2014 contacts the right vertical surface of the plastic block sample, the bottom end of the pull ring rod 2015 moves to the position of the fixed groove 2016 at the top of the workbench 201, the pull ring rod 2015 is pulled through the tension spring at the top of the pull ring rod 2015 to enable the bottom of the pull ring rod to be inserted into the fixed groove 2016, so that the movable frame 2014 is fixed in position, the hydraulic part 202 is controlled by the control part 3 to drive the square pressing block 2021 to descend to enable the square pressing block to contact with the sample to expose the top surface, the shearing force strength of the sample can be measured through matching with the square groove box 2012, after the plastic sample is placed between the turnover flap 413 and the clamping plate, the clamping plate can be moved towards the turnover flap 413 through rotating the fixed bolt 415, the plastic sample on the inner side can be clamped and fixed, the variable speed motor 401 is started through the control part 3, the eccentric cover 402 is driven to eccentrically rotate through the motor rotating shaft, the contact bearing 403 can be matched with the reset spring, the push rod 404 can be driven to do reciprocating motion, the outer arc groove 4051 of the square moving rod 405 is in rolling contact with the inner roller 4062 of the groove of the fixing plate 406, the friction force can be reduced while the reciprocating motion direction is fixed, the side rods 4071 on two sides are driven to do reciprocating motion through the connecting hoop 407, the driving rack 408 on the inner side of the side rod 4071 can drive the driven gear 409 to rotate through tooth meshing transmission, so that the driven rack 410 which is meshed and driven by the driven gear 409 transversely reciprocates, the sliding rod can be driven to slide in the fixing seat 411, the folding flaps 413 can drive the plastic sample to be folded and folded, the bending fatigue degree of the material can be measured through multiple folding, the sample plastic plate 6 is placed on the base of the hinged clamping rod 502, can carry out the centre gripping to sample plastic slab 6 through turning over articulated clamping bar 502 upwards and turning over through cooperating with connecting block 503, can be connected articulated clamping bar 502 with top connecting block 503 through the screw rod through swivelling joint bolt 5021, through the operation of 3 control variable speed motor 401 of control part, drive eccentric lid 402 eccentric rotation through the motor shaft, can make contact bearing 403 and reset spring cooperation, can drive push rod 404 and make reciprocating motion, can drive its rear end striking head through push rod 404 reciprocating motion and carry out reciprocal striking to sample plastic slab 6, through regularly measuring sample plastic slab 6 sunken degree, can detect anti striking fatigue degree of sample material and sample elastic modulus.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A mechanical property measuring device for new mechanical plastic materials is characterized in that: comprises a bearing table (1);

the bearing platform (1) is of a platform-shaped structure, the bearing platform (1) comprises a T-shaped plate (101), the T-shaped plate (101) is in an inverted T shape, and the T-shaped plate is fixedly connected to the top surface of the bearing platform (1) through a bolt;

a shear force measuring structure (2) is arranged on the front side of the top of the bearing table (1);

a control part (3) is arranged in the shear force measuring structure (2);

a bending fatigue detection mechanism (4) is arranged in the middle of the top surface of the bearing table (1);

The rear side of the top of the bearing table (1) is provided with an impact test structure (5).

2. The new mechanical plastic material mechanical property measuring device of claim 1, characterized in that the shear force measuring structure (2) comprises:

the workbench (201) is fixedly connected to the front end vertical surface of the T-shaped plate (101);

the fixing frame (2011) is fixedly connected to the left side of the top surface of the workbench (201) through bolts;

the square groove box (2012) is fixedly connected to the top of the fixed frame (2011);

the sliding rail (2013), the sliding rail (2013) is fixedly connected to the top surface of the workbench (201), and the sliding rail (2013) is located on the right side of the fixing frame (2011).

3. The new mechanical plastic material mechanical property measuring device of claim 2, characterized in that the shear force measuring structure (2) further comprises:

the movable frame (2014) is arranged on the top surface of the sliding rail (2013) in a sliding connection mode, and a vertical through round hole is formed in the movable frame;

the pull ring rod (2015) is arranged in a circular hole in the movable frame (2014) in a sliding connection mode, the bottom surface of a circular piece at the top of the pull ring rod is provided with a tension spring, and the bottom of the tension spring is fixed with the top surface of the movable frame (2014);

the fixed slot (2016) is a cylindrical groove, and the fixed slot (2016) is fixedly connected to the top of the workbench (201).

4. A new mechanical plastic material mechanical property measuring device according to claim 3, characterized in that the shear force measuring structure (2) further comprises:

a hydraulic part (202), wherein the hydraulic part (202) is arranged above the workbench (201);

the square pressing block (2021), the square pressing block (2021) is fixedly connected to the bottom surface of the bottom telescopic part of the hydraulic part (202), and the vertical surfaces of the two sides of the square pressing block are parallel to the angle of the vertical surface on the inner side of the square groove box (2012);

and the pump (2022), the pump (2022) is arranged on the right side of the workbench (201), and the circuit of the pump is coupled with the hydraulic part (202) and the circuit of the control part (3).

5. The device for measuring mechanical properties of new mechanical plastic materials as claimed in claim 1, wherein the bending fatigue detection mechanism (4) comprises:

the variable speed motor (401), the variable speed motor (401) is fixedly connected to the top surface of the bearing platform (1), and the circuit of the variable speed motor is coupled with the circuit of the control part (3);

the eccentric cover (402) is fixedly connected to the top of a rotating shaft of the variable speed motor (401), and the top of the eccentric cover is provided with a pipe wall;

the contact bearing (403) is arranged above the eccentric cover (402), and the outer ring of the contact bearing (403) is in contact with the pipe wall of the eccentric cover (402);

the push rod (404), push rod (404) fixed connection is in contact with the top of bearing (403), its rear end fixed connection has the striking head.

6. Device for measuring mechanical properties of new mechanical plastic materials according to claim 5, wherein the bending fatigue detection mechanism (4) comprises:

the spring ring (4041) is fixedly connected to the curved side surface of the push rod (404), and the rear end of the spring ring is fixedly connected with a return spring;

the limiting sliding seat (4042) is fixedly connected to the top of the bearing table (1), the limiting sliding seat (4042) is arranged on the rear side of the variable speed motor (401), and the top of the limiting sliding seat is in sliding connection with the push rod (404);

a square motion bar (405) which is arranged at the front end of the push bar (404) through coaxial connection;

the number of the arc-shaped grooves (4051) is four, and the arc-shaped grooves (4051) are fixedly connected to the side vertical surface of the square motion rod (405).

7. The device for measuring mechanical properties of new mechanical plastic material according to claim 6, wherein the bending fatigue detection mechanism (4) further comprises:

the fixing plate (406) is fixedly connected to the top surface of the bearing table (1), is positioned on the front side of the variable speed motor (401), and is internally provided with a transverse through square slot;

the reinforcing beams (4061) are arranged in four groups and fixedly connected to the front end of the fixing plate (406), and the front ends of the reinforcing beams (4061) are fixedly connected to the vertical surface of the rear end of the T-shaped plate (101);

The roller (4062) is fixedly connected to the vertical surface of the inner side of the square groove in the fixing plate (406), and the inner side of the roller is in supporting contact with the arc-shaped groove (4051);

the connecting hoop (407), the connecting hoop (407) is arranged at the front end of the square moving rod (405) through coaxial connection;

side rods (4071) which are arranged in two groups are fixedly connected with two sides of the connecting hoop (407).

8. The device for measuring mechanical properties of new mechanical plastic material according to claim 7, wherein the bending fatigue detection mechanism (4) further comprises:

a transmission rack (408) fixedly connected to the inner side of the side rod (4071);

the driven gears (409) are arranged in two groups, are arranged on the left side and the right side of the T-shaped plate (101) through hinged connection and are in meshed transmission with the transmission rack (408);

the driven rack (410), the driven rack (410) is arranged on the inner side of the driven gear (409), and the rear end of the driven rack (410) is fixedly connected with a cylindrical sliding rod;

the fixed seat (411) is arranged at the rear end of the T-shaped plate (101) and is in sliding connection with a cylindrical sliding rod at the rear end of the driven rack (410);

the connecting plate (412) is fixedly connected to the inner sides of the two groups of fixing seats (411), and the connecting plate (412) is vertical to the bearing table (1);

the turnover flap (413) is arranged at the rear end of the cylindrical sliding rod at the rear end of the driven rack (410) through hinged connection;

The hinge piece (414) is arranged between the turnover flap (413) and the fixed seat (411) through hinge connection;

the fixing bolt (415), the fixing bolt (415) sets up in turning over lamella (413) through threaded connection, and the clamping plate is provided with through the hinge joint in fixing bolt (415) rear end.

9. The device for measuring mechanical properties of new mechanical plastic materials as claimed in claim 1, wherein the impact test structure (5) comprises:

the L-shaped frame (501) is fixedly connected to the top surface of the rear side of the bearing table (1) through bolts;

the hinged clamping rods (502) are arranged in two groups in number and are arranged at the front end vertical face of the L-shaped frame (501) through hinged connection;

the connecting bolt (5021) is arranged at the top of the hinged clamping rod (502) in a threaded connection mode, and the connecting bolt (5021) is arranged on the top of the hinged clamping rod in a threaded connection mode;

the number of the connecting blocks (503) is two, the connecting blocks are fixedly connected to the vertical surface of the front end of the top of the L-shaped frame (501), and two groups of threaded holes are formed in the front end of the top connecting block (503);

the number of the side limiting pieces (5031) is two, and the side limiting pieces (5031) are fixedly connected to the front end vertical surfaces of the two groups of connecting blocks (503);

and the sample plastic plate (6) is arranged on the inner sides of the two groups of side limiting sheets (5031), and the rear end vertical face of the sample plastic plate is contacted with the front end vertical face of the connecting block (503).